diff --git a/netsim/ansible/templates/initial/asa.j2 b/netsim/ansible/templates/initial/asa.j2
index 35edda3197..29beb07c6c 100644
--- a/netsim/ansible/templates/initial/asa.j2
+++ b/netsim/ansible/templates/initial/asa.j2
@@ -9,6 +9,17 @@ name {{ v.loopback.ipv4|ansible.utils.ipaddr('address') }} {{ k }}
 {%   endfor %}
 {% endif %}
 !
+{% if loopback is defined %}
+interface {{ loopback.ifname }}
+ nameif {{ loopback.ifname }}
+{%   if 'ipv4' in loopback %}
+ ip address {{ loopback.ipv4|ansible.utils.ipaddr('address') }} {{ loopback.ipv4|ansible.utils.ipaddr('netmask') }}
+{%   endif %}
+{%   if 'ipv6' in loopback %}
+ ipv6 address {{ loopback.ipv6|upper }}
+{%   endif %}
+{% endif %}
+!
 {% for l in interfaces|default([]) %}
 interface {{ l.ifname }}
 {%   if l.shutdown|default(False) %}
diff --git a/netsim/devices/asav.yml b/netsim/devices/asav.yml
index 8db41902cc..30dad548e4 100644
--- a/netsim/devices/asav.yml
+++ b/netsim/devices/asav.yml
@@ -2,6 +2,8 @@
 description: Cisco ASAv
 support:
   level: minimal
+loopback_interface_name: Loopback{ifindex}
+loopback: false
 interface_name: GigabitEthernet0/{ifindex}
 ifindex_offset: 0
 mgmt_if: Management0/0